Ignore duplicate if type differ but provided type is unknown
Since a few days woob does not return the
type for my bank access, resulting in a lot of duplicates.
This MR fixes it. I don't know why this is not fixed here: https://framagit.org/kresusapp/kresus/-/blob/main/server/lib/diff-transactions.ts#L28.
I am open to discussion of course.